{"id":162295,"date":"2019-11-22T11:00:31","date_gmt":"2019-11-22T03:00:31","guid":{"rendered":"https:\/\/gulass.cn\/?p=162295"},"modified":"2019-10-24T09:54:39","modified_gmt":"2019-10-24T01:54:39","slug":"shell-for-loop","status":"publish","type":"post","link":"https:\/\/gulass.cn\/shell-for-loop.html","title":{"rendered":"Shell \u4e4bfor \u5faa\u73af"},"content":{"rendered":"<table>\n<tbody>\n<tr>\n<td style=\"padding: 5px 12px; width: 25px; font-size: 22px; text-align: center; background: #E8E8E8; line-height: 30px; color: #999;\">\u5bfc\u8bfb<\/td>\n<td style=\"padding: 10px 10px 12px; line-height: 20px;\"><strong>\u4e0e\u5176\u4ed6\u7f16\u7a0b\u8bed\u8a00\u7c7b\u4f3c\uff0cShell\u652f\u6301for\u5faa\u73af\u3002<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-162412\" src=\"https:\/\/gulass.cn\/wp-content\/uploads\/2019\/10\/4-9.jpg\" alt=\"\" width=\"500\" height=\"375\" srcset=\"https:\/\/gulass.cn\/wp-content\/uploads\/2019\/10\/4-9.jpg 500w, https:\/\/gulass.cn\/wp-content\/uploads\/2019\/10\/4-9-300x225.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p><strong>for\u5faa\u73af\u4e00\u822c\u683c\u5f0f\u4e3a\uff1a<\/strong><\/p>\n<pre>for var in item1 item2 ... itemN\r\ndo\r\ncommand1\r\ncommand2\r\n...\r\ncommandN\r\ndone<\/pre>\n<p>\u5199\u6210\u4e00\u884c\uff1a<\/p>\n<pre>for var in item1 item2 ... itemN; do command1; command2\u2026 done;<\/pre>\n<p>\u5f53\u53d8\u91cf\u503c\u5728\u5217\u8868\u91cc\uff0cfor\u5faa\u73af\u5373\u6267\u884c\u4e00\u6b21\u6240\u6709\u547d\u4ee4\uff0c\u4f7f\u7528\u53d8\u91cf\u540d\u83b7\u53d6\u5217\u8868\u4e2d\u7684\u5f53\u524d\u53d6\u503c\u3002\u547d\u4ee4\u53ef\u4e3a\u4efb\u4f55\u6709\u6548\u7684shell\u547d\u4ee4\u548c\u8bed\u53e5\u3002in\u5217\u8868\u53ef\u4ee5\u5305\u542b\u66ff\u6362\u3001\u5b57\u7b26\u4e32\u548c\u6587\u4ef6\u540d\u3002<\/p>\n<p>in\u5217\u8868\u662f\u53ef\u9009\u7684\uff0c\u5982\u679c\u4e0d\u7528\u5b83\uff0cfor\u5faa\u73af\u4f7f\u7528\u547d\u4ee4\u884c\u7684\u4f4d\u7f6e\u53c2\u6570\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u987a\u5e8f\u8f93\u51fa\u5f53\u524d\u5217\u8868\u4e2d\u7684\u6570\u5b57\uff1a<\/p>\n<pre>for loop in 1 2 3 4 5\r\ndo\r\necho \"The value is: $loop\"\r\ndone<\/pre>\n<p>\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n<pre>The value is: 1\r\nThe value is: 2\r\nThe value is: 3\r\nThe value is: 4\r\nThe value is: 5<\/pre>\n<p>\u987a\u5e8f\u8f93\u51fa\u5b57\u7b26\u4e32\u4e2d\u7684\u5b57\u7b26\uff1a<\/p>\n<pre>for str in 'This is a string'\r\ndo\r\necho $str\r\ndone<\/pre>\n<p>\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n<pre>This is a string<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>for\u5faa\u73af\u4e00\u822c\u683c\u5f0f\u4e3a\uff1a for var in item1 item2 &#8230; itemN do command [&hellip;]<\/p>\n","protected":false},"author":321,"featured_media":162414,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[55],"tags":[],"class_list":["post-162295","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-thread"],"acf":[],"_links":{"self":[{"href":"https:\/\/gulass.cn\/wp-json\/wp\/v2\/posts\/162295","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gulass.cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gulass.cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gulass.cn\/wp-json\/wp\/v2\/users\/321"}],"replies":[{"embeddable":true,"href":"https:\/\/gulass.cn\/wp-json\/wp\/v2\/comments?post=162295"}],"version-history":[{"count":5,"href":"https:\/\/gulass.cn\/wp-json\/wp\/v2\/posts\/162295\/revisions"}],"predecessor-version":[{"id":162415,"href":"https:\/\/gulass.cn\/wp-json\/wp\/v2\/posts\/162295\/revisions\/162415"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/gulass.cn\/wp-json\/wp\/v2\/media\/162414"}],"wp:attachment":[{"href":"https:\/\/gulass.cn\/wp-json\/wp\/v2\/media?parent=162295"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gulass.cn\/wp-json\/wp\/v2\/categories?post=162295"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gulass.cn\/wp-json\/wp\/v2\/tags?post=162295"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}